USN-1452-1: Linux kernel vulnerabilities

A flaw was found in the Linux kernel's KVM Kernel Virtual Machine virtual cpu setup. An unprivileged local user could exploit this flaw to crash the system leading to a denial of service. CVE-2012-1601 Steve Grubb reported a flaw with Linux fscaps file system base capabilities when used to increa...

USN-1422-1: Linux kernel vulnerabilities

Sasha Levin discovered a flaw in the permission checking for device assignments requested via the kvm ioctl in the Linux kernel. A local user could use this flaw to crash the system causing a denial of service. CVE-2011-4347 Stephan Bärwolf discovered a flaw in the KVM kernel-based virtual machin...

USN-1400-1: Firefox vulnerabilities

Soroush Dalili discovered that Firefox did not adequately protect against dropping JavaScript links onto a frame. A remote attacker could, through cross-site scripting XSS, exploit this to modify the contents or steal confidential data. CVE-2012-0455 Atte Kettunen discovered a use-after-free...

USN-1387-1: Linux kernel (Maverick backport) vulnerabilities

Aristide Fattori and Roberto Paleari reported a flaw in the Linux kernel's handling of IPv4 icmp packets. A remote user could exploit this to cause a denial of service. CVE-2011-1927 A flaw was found in the Linux Ethernet bridge's handling of IGMP Internet Group Management Protocol packets. An...

USN-1373-2: OpenJDK 6 (ARM) vulnerabilities

USN 1373-1 fixed vulnerabilities in OpenJDK 6 in Ubuntu 10.04 LTS, Ubuntu 10.10 and Ubuntu 11.04 for all architectures except for ARM armel. This provides the corresponding OpenJDK 6 update for use with the ARM armel architecture in Ubuntu 10.04 LTS, Ubuntu 10.10 and Ubuntu 11.04. Original adviso...

USN-1362-1: Linux kernel vulnerabilities

Han-Wen Nienhuys reported a flaw in the FUSE kernel module. A local user who can mount a FUSE file system could cause a denial of service. CVE-2011-3353 A flaw was found in KVM's Programmable Interval Timer PIT. When a virtual interrupt control is not available a local user could use this to caus...

USN-1337-1: Linux kernel (Natty backport) vulnerabilities

Peter Huewe discovered an information leak in the handling of reading security-related TPM data. A local, unprivileged user could read the results of a previous TPM command. CVE-2011-1162 Clement Lecigne discovered a bug in the HFS filesystem. A local attacker could exploit this to cause a kernel...

USN-1319-1: Linux kernel (OMAP4) vulnerabilities

Peter Huewe discovered an information leak in the handling of reading security-related TPM data. A local, unprivileged user could read the results of a previous TPM command. CVE-2011-1162 Clement Lecigne discovered a bug in the HFS filesystem. A local attacker could exploit this to cause a kernel...

USN-1226-2: cifs-utils vulnerabilities

Dan Rosenberg discovered that cifs-utils incorrectly handled changes to the mtab file. A local attacker could use this issue to corrupt the mtab file, possibly leading to a denial of service. CVE-2011-1678 Jan Lieskovsky discovered that cifs-utils incorrectly filtered certain strings being added ...

USN-1192-1: Firefox vulnerabilities

Aral Yaman discovered a vulnerability in the WebGL engine. An attacker could potentially use this to crash Firefox or execute arbitrary code with the privileges of the user invoking Firefox. CVE-2011-2989 Vivekanand Bolajwar discovered a vulnerability in the JavaScript engine. An attacker could...

USN-1081-1: Linux kernel vulnerabilities

It was discovered that KVM did not correctly initialize certain CPU registers. A local attacker could exploit this to crash the system, leading to a denial of service. CVE-2010-3698 Thomas Pollet discovered that the RDS network protocol did not check certain iovec buffers. A local attacker could...

USN-1071-1: Linux kernel vulnerabilities

Tavis Ormandy discovered that the Linux kernel did not properly implement exception fixup. A local attacker could exploit this to crash the kernel, leading to a denial of service. CVE-2010-3086 Dan Rosenberg discovered that the Linux kernel TIPC implementation contained multiple integer signednes...

USN-1055-1: OpenJDK vulnerabilities

It was discovered that IcedTea for Java did not properly verify signatures when handling multiply signed or partially signed JAR files, allowing an attacker to cause code to execute that appeared to come from a verified source. CVE-2011-0025 USN 1052-1 fixed a vulnerability in OpenJDK for Ubuntu...

USN-1042-2: PHP5 regression

USN-1042-1 fixed vulnerabilities in PHP5. The fix for CVE-2010-3436 introduced a regression in the openbasedir restriction handling code. This update fixes the problem. We apologize for the inconvenience. Original advisory details: It was discovered that attackers might be able to bypass...

USN-1011-3: Xulrunner vulnerability

USN-1011-1 fixed a vulnerability in Firefox. This update provides the corresponding update for Xulrunner. Original advisory details: Morten Krakvik discovered a heap-based buffer overflow in Firefox. If a user were tricked into navigating to a malicious site, an attacker could cause a denial of...

USN-930-6: Firefox and Xulrunner vulnerability

USN-957-1 fixed vulnerabilities in Firefox and Xulrunner. Daniel Holbert discovered that the fix for CVE-2010-1214 introduced a regression which did not properly initialize a plugin pointer. If a user were tricked into viewing a malicious site, a remote attacker could use this to crash the browse...

USN-940-2: Kerberos vulnerability

USN-940-1 fixed vulnerabilities in Kerberos. This update provides the corresponding updates for Ubuntu 10.04. Original advisory details: Joel Johnson, Brian Almeida, and Shawn Emery discovered that Kerberos did not correctly verify certain packet structures. An unauthenticated remote attacker cou...

USN-930-1: Firefox and Xulrunner vulnerabilities

If was discovered that Firefox could be made to access freed memory. If a user were tricked into viewing a malicious site, a remote attacker could cause a denial of service or possibly execute arbitrary code with the privileges of the user invoking the program. This issue only affected Ubuntu 8.0...

USN-915-1: Thunderbird vulnerabilities

Several flaws were discovered in the JavaScript engine of Thunderbird. If a user had JavaScript enabled and were tricked into viewing malicious web content, a remote attacker could cause a denial of service or possibly execute arbitrary code with the privileges of the user invoking the program...

USN-877-1: Firefox 3.0 and Xulrunner 1.9 regression

USN-873-1 fixed vulnerabilities in Firefox and Xulrunner. The upstream changes introduced a regression when using NTLM authentication. This update fixes the problem and adds additional stability fixes. We apologize for the inconvenience. Original advisory details: Jesse Ruderman, Josh Soref,...

USN-859-1: OpenJDK vulnerabilities

Dan Kaminsky discovered that SSL certificates signed with MD2 could be spoofed given enough time. As a result, an attacker could potentially create a malicious trusted certificate to impersonate another site. This update handles this issue by completely disabling MD2 for certificate validation in...

USN-799-1: D-Bus vulnerability

It was discovered that the D-Bus library did not correctly validate signatures. If a local user sent a specially crafted D-Bus key, they could spoof a valid signature and bypass security policies...

USN-722-1: sudo vulnerability

Harald Koenig discovered that sudo did not correctly handle certain privilege changes when handling groups. If a local attacker belonged to a group included in a "RunAs" list in the /etc/sudoers file, that user could gain root privileges. This was not an issue for the default sudoers file shipped...

USN-690-2: Firefox vulnerabilities

Several flaws were discovered in the browser engine. These problems could allow an attacker to crash the browser and possibly execute arbitrary code with user privileges. CVE-2008-5500 Boris Zbarsky discovered that the same-origin check in Firefox could be bypassed by utilizing XBL-bindings. An...

USN-666-1: Dovecot vulnerability

It was discovered that certain email headers were not correctly handled by Dovecot. If a remote attacker sent a specially crafted email to a user with a mailbox managed by Dovecot, that user's mailbox would become inaccessible through Dovecot, leading to a denial of service...

USN-664-1: Tk vulnerability

It was discovered that Tk could be made to overrun a buffer when loading certain images. If a user were tricked into opening a specially crafted GIF image, remote attackers could cause a denial of service or execute arbitrary code with user privileges...

USN-651-1: Ruby vulnerabilities

Akira Tagoh discovered a vulnerability in Ruby which lead to an integer overflow. If a user or automated system were tricked into running a malicious script, an attacker could cause a denial of service or possibly execute arbitrary code with the privileges of the user invoking the program...

USN-612-2: OpenSSH vulnerability

A weakness has been discovered in the random number generator used by OpenSSL on Debian and Ubuntu systems. As a result of this weakness, certain encryption keys are much more common than they should be, such that an attacker could guess the key through a brute-force attack given minimal knowledg...

USN-592-1: Firefox vulnerabilities

Alexey Proskuryakov, Yosuke Hasegawa and Simon Montagu discovered flaws in Firefox's character encoding handling. If a user were tricked into opening a malicious web page, an attacker could perform cross-site scripting attacks. CVE-2008-0416 Various flaws were discovered in the JavaScript engine...

USN-528-1: MySQL vulnerabilities

Neil Kettle discovered that MySQL could be made to dereference a NULL pointer and divide by zero. An authenticated user could exploit this with a crafted IF clause, leading to a denial of service. CVE-2007-2583 Victoria Reznichenko discovered that MySQL did not always require the DROP privilege. ...

USN-507-1: tcp-wrappers vulnerability

It was discovered that the TCP wrapper library was incorrectly allowing connections to services that did not specify server-side connection details. Remote attackers could connect to services that had been configured to block such connections. This only affected Ubuntu Feisty...

USN-481-1: ImageMagick vulnerabilities

Multiple vulnerabilities were found in ImageMagick's handling of DCM and WXD image files. By tricking a user into processing a specially crafted image with an application that uses imagemagick, an attacker could execute arbitrary code with the user's privileges...

USN-470-1: Linux kernel vulnerabilities

USN-464-1 fixed several vulnerabilities in the Linux kernel. Some additional code changes were accidentally included in the Feisty update which caused trouble for some people who were not using UUID-based filesystem mounts. These changes have been reverted. We apologize for the inconvenience. For...

USN-360-1: awstats vulnerabilities

awstats did not fully sanitize input, which was passed directly to the user's browser, allowing for an XSS attack. If a user was tricked into following a specially crafted awstats URL, the user's authentication information could be exposed for the domain where awstats was hosted. CVE-2006-3681...

USN-296-2: Firefox vulnerabilities

USN-296-1 fixed several vulnerabilities in Firefox for the Ubuntu 6.06 LTS release. This update provides the corresponding fixes for Ubuntu 5.04 and Ubuntu 5.10. For reference, these are the details of the original USN: Jonas Sicking discovered that under some circumstances persisted XUL attribut...

USN-275-1: Mozilla vulnerabilities

Web pages with extremely long titles caused subsequent launches of Mozilla browser to hang for up to a few minutes, or caused Mozilla to crash on computers with insufficient memory. CVE-2005-4134 Igor Bukanov discovered that the JavaScript engine did not properly declare some temporary variables...

USN-250-1: Linux kernel vulnerability

Herbert Xu discovered a remote Denial of Service vulnerability in the ICMP packet handler. In some situations a memory allocation was released twice, which led to memory corruption. A remote attacker could exploit this to crash the machine...

USN-101-1: telnet vulnerabilities

A buffer overflow was discovered in the telnet client's handling of the LINEMODE suboptions. By sending a specially constructed reply containing a large number of SLC Set Local Character commands, a remote attacker i. e. a malicious telnet server could execute arbitrary commands with the privileg...

USN-72-1: Perl vulnerabilities

Two exploitable vulnerabilities involving setuid-enabled perl scripts have been discovered. The package "perl-suid" provides a wrapper around perl which allows to use setuid-root perl scripts, i.e. user-callable Perl scripts which have full root privileges. Previous versions allowed users to...

USN-47-1: Linux kernel vulnerabilities

Georgi Guninski discovered two Denial of Service vulnerabilities in the Linux kernel. An integer overflow in the vcresize function caused the memory allocation for the new screen being too short, thus causing a buffer overflow and a kernel crash. There was also a memory leak in the ipoptionsget...

USN-29-1: samba vulnerability

During an audit of the Samba 3.x code base Stefan Esser discovered a Unicode file name buffer overflow within the handling of TRANSACT2QFILEPATHINFO replies. A malicious samba user with write access to a share could exploit this by creating specially crafted path names files with very long names...

USN-10-1: XML library vulnerabilities

Several buffer overflows have been discovered in libxml2's FTP connection and DNS resolution functions. Supplying very long FTP URLs or IP addresses might result in execution of arbitrary code with the privileges of the process using libxml2. Since libxml2 is used in packages like php4-imagick, t...

USN-9-1: tetex-bin vulnerabilities

Chris Evans and Marcus Meissner recently discovered several integer overflow vulnerabilities in xpdf, a viewer for PDF files. Because tetex-bin contains xpdf code, it is also affected. These vulnerabilities could be exploited by an attacker providing a specially crafted TeX, LaTeX, or PDF file...

USN-7483-1: OpenJDK 21 vulnerabilities

Alicja Kario discovered that the JSSE component of OpenJDK 21 incorrectly handled RSA padding. An Attacker could possibly use this issue to obtain sensitive information. CVE-2025-21587 It was discovered that the Compiler component of OpenJDK 21 incorrectly handled compiler transformations. An...

USN-7467-1: libxml2 vulnerabilities

It was discovered that the libxml2 Python bindings incorrectly handled certain return values. An attacker could possibly use this issue to cause libxml2 to crash, resulting in a denial of service. CVE-2025-32414 It was discovered that libxml2 incorrectly handled certain memory operations. A remot...

USN-6921-2: Linux kernel vulnerabilities

Benedict Schlüter, Supraja Sridhara, Andrin Bertschi, and Shweta Shinde discovered that an untrusted hypervisor could inject malicious VC interrupts and compromise the security guarantees of AMD SEV-SNP. This flaw is known as WeSee. A local attacker in control of the hypervisor could use this to...

USN-6820-2: Linux kernel (NVIDIA) vulnerabilities

It was discovered that the ATA over Ethernet AoE driver in the Linux kernel contained a race condition, leading to a use-after-free vulnerability. An attacker could use this to cause a denial of service or possibly execute arbitrary code. CVE-2023-6270 It was discovered that the Atheros 802.11ac...

USN-6777-3: Linux kernel (GCP) vulnerabilities

Zheng Wang discovered that the Broadcom FullMAC WLAN driver in the Linux kernel contained a race condition during device removal, leading to a use- after-free vulnerability. A physically proximate attacker could possibly use this to cause a denial of service system crash. CVE-2023-47233 Several...

USN-6728-3: Squid vulnerability

USN-6728-1 fixed vulnerabilities in Squid. The fix for CVE-2023-5824 caused Squid to crash in certain environments on Ubuntu 20.04 LTS and was disabled in USN-6728-2. The problematic fix for CVE-2023-5824 has now been corrected and reinstated in this update. We apologize for the inconvenience...

USN-6741-1: Linux kernel vulnerabilities

Daniele Antonioli discovered that the Secure Simple Pairing and Secure Connections pairing in the Bluetooth protocol could allow an unauthenticated user to complete authentication without pairing credentials. A physically proximate attacker placed between two Bluetooth devices could use this to...